TW200819043A - Fine bubble airlift device - Google Patents

Abstract

The present invention relates to an aeration device for use in a liquid medium. The device includes a housing adapted to float within the medium such that a top portion thereof remains above a top surface of the medium. The housing has a bottom portion and an open side portion. The device further includes a hose affixed to the bottom portion of the housing substantially parallel to the surface of the liquid medium. The hose has a wall with a plurality of pores formed therein. The device further includes a gas-supplying pipe affixed to the hose and means for supplying a gas to the pipe such that the gas passes through the pipe and into the hose.

Description

200819043 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to an apparatus for venting and circulating a liquid (and in particular, water in a pond). [Prior Art] There are various devices for introducing bubbles into a large amount of liquid, usually water. These devices have many applications that cover areas such as aquaculture (including the cultivation and cultivation of fish in a controlled environment (often referred to as fish farming)), wastewater management and the like. Other uses are generally known in the art. These devices include a commonly referred to as the surface venting device and the t liter device. The surface venting device of the prior art uses a paddle wheel to agitate water near its surface. This causes bubbles of the surrounding air to be trapped in the water, and some of the bubbles are absorbed into the water. The paddle further forces the vented water out of the device and draws additional water towards the device for ventilation. Surface ventilators are inefficient' requiring a large amount of energy input relative to the volume of vented water. It also has several moving parts that may require frequent maintenance. Airlift devices have been known to us for many years' and operate essentially by supplying air bubbles to the water at a predetermined depth below the surface of the water. Some of the air (4) is taken into the water', which causes the water to become less dense and rise to the surface & the rise will cause it to circulate, which causes the aerated water to disperse and direct the water outside the device to the device for ventilation . Water is ventilated in a gas lift by using a diffuser. Many forms of diffusers have existed for many years and concealed, and air or another gas (such as nitrogen or oxygen) is forced through this porous body by 120217.doc 200819043. When the diffuser is immersed in water, the movement of the #J emulsion through the device causes bubbles to appear from the pores and enter the water. Known diffusers include ceramic dome-shaped diffusers and porous rubber hoses. However, it has been found that dome-shaped diffusers are difficult to maintain, lack durability, and are expensive to manufacture in mass production. Porous rubber hoses have been used for ventilation. However, the main drawback of existing porous rubber hoses and other porous rubber aeration products is that after a period of curing in the water, the hose requires a high air pressure delivery system because the rubber particles do not expand satisfactorily in the water, thereby reducing Small pore diameter. Reducing the pore diameter leads to an increase in flow resistance, and as the pipeline is in its environment

• 彳 obtained by thermoformable polymeric materials (such as polyvinyl chloride (PVC) and polyethylene) by dispersing the bubbles in a molten state

Then the size and placement. For example, a porous hose made of olefin (PE). In the thermoformable material, in this body, the voids caused by the irregularities may be completely contained in the soft wall or may be exposed only to the side of the wall, neither of which is produced. Porosity. In addition, it may be necessary to connect a plurality of bubbles in a passage that completely passes through the hose, which increases the resistance of the path. This can cause inefficiencies, which can reduce the efficacy of the gas lifter using this diffuser. 0 β Generally, the size of the bubbles that diffuse into the water during the aeration of water can be formed by providing smaller or larger The diffusion device of the pores (smaller pores produce smaller: bubbles) varies. Some known devices prefer to use smaller bubbles because smaller bubbles are more easily absorbed into the water. However, for the reasons described above, many known devices for diffusing fine bubbles into water are expensive or inefficient to operate. Other known devices prefer to use larger and thicker bubbles because they can travel in water at higher rates. Accordingly, a need exists for a device that can be used to effectively vent a large volume of liquid while utilizing a less expensive or more reliable diffusion device that allows the gas to be sufficiently absorbed into the liquid medium. [Invention] According to the present invention, a method for venting a body of a liquid medium (such as water) having a bottom surface is provided, the method comprising: providing an outer casing adapted to float in a liquid medium; The soft body has a predetermined position at a predetermined distance from the surface of the liquid medium and a predetermined second distance from the bottom surface to a predetermined position in the outer casing substantially parallel to the surface of the liquid medium. A plurality of pores therein; gas is supplied to the hose at a predetermined gas supply rate to vent the liquid medium with a standard aeration efficiency of greater than about 120217.doc 200819043 4 pounds of oxygen per hour per horsepower in fresh water. Preferably, the predetermined gas supply rate is between about 1/10 SCFM / hose length / / 10 SCFM / hose length, and optimally at about 〇.2 SCFM / hose length and 1.0 SCFM / between hose longitudinals. In accordance with an embodiment of the method of the present invention, the hose includes a plurality of hose sections disposed in a parallel array. Preferably, the plurality of hose sections are regularly spaced between the center of the parallel array of sturdy sections at a distance of between about 5 inches and 5 inches, preferably in a parallel array of hose sections. The centers are regularly separated by the distance between the 2 and the leaves of the scoop. In accordance with a preferred embodiment of the method of the present invention, the predetermined first distance is between about 6 inches and 48 inches, preferably between about 29 inches and 48 inches, and most preferably at least about 36 inches. guess. In accordance with another embodiment of the method of the present invention, the predetermined second distance is at least about 4 angstroms, preferably at least about 18 inches, and most preferably at least about 10,000 angstroms in a preferred embodiment, standard Ventilation efficiency is greater than about 6 pounds of oxygen per hour per horsepower in the brine. In yet another embodiment of the method of the present invention, the method provides a venting of the liquid medium at a standard oxygen transfer rate of greater than about 4 pounds of oxygen per hour in fresh water. In another embodiment of the method of the invention, the liquid medium is vented at a standard oxygen transfer rate of greater than about 6 pulverized oxygen per hour in the brine. This invention relates to a device for use in a liquid medium. The device includes an outer/V and the peripheral device is adapted to float within the medium such that its top portion 120217.doc 200819043 is retained above the top surface of the media. The outer casing has a bottom portion and an open side portion. The device further includes a hose attached to the bottom portion of the outer casing substantially parallel to the surface of the liquid medium. The hose has a wall formed with a plurality of apertures. The plurality of apertures have an average diameter of between about 1 inch and about 0.004 inches and are substantially evenly spaced throughout the length of the hose. The device further includes a gas attached to the hose

A body supply line and means for supplying gas to the line such that the gas passes through the line and enters the hose. The means for supplying gas to the pipeline may include a blower located outside of the liquid medium. The blower can be coupled to the conduit by a flexible hose having a first end and a second end attached to the outlet portion of the blower and the second end attached to the conduit Entrance section. Another embodiment of the invention is directed to a device for use in a liquid enamel. The device includes an outer casing that is adapted to float within the medium such that its top portion remains above the top surface of the media. The outer casing has a bottom portion and the open side m means includes - a conduit attached adjacent the open bottom portion of the outer casing. The conduit is formed - having a first side: a rectangular shape on the second side. a plurality of hose portions each having a first end and a second to first end of the plurality of hose portions attached to a first side of the rectangular conduit and a second end of the plurality of hose portions attached to the rectangle The younger side of the pipeline allows the gas to flow from the pipeline to the plurality of hoses at the end of the plurality of hose sections. # s ^ ° The mother of the plurality of hose sections further has a plurality of gaps formed in the ancient —a a few walls of the wall' The plurality of holes I have an average diameter between about 英 〇 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英 英. Each of the plurality of hoses is formed from thermoset polymer particles dispersed within a matrix of thermoplastic binder material. The apparatus further includes means for supplying gas to the conduit such that the gas passes through the conduit and into the plurality of hoses. Another embodiment of the present invention is directed to a device for use in a liquid medium, comprising: a housing adapted to float within the liquid medium, the housing having an open bottom portion and an open side portion And a plurality of side wall portions having a top end and a bottom end, each of the plurality of side wall portions including a pair of side wall sections and an intervention space for generating buoyancy in the apparatus to provide a float; a hose, the body of which is attached to the bottom portion of the outer casing parallel to the surface of the medium, and has a wall of a plurality of apertures which are substantially equally spaced throughout the length of the hose; a gas supply line attached to the substrate; and for supplying m members to the gas supply line. More expensive, the bottom portion of the outer casing is spaced a predetermined distance from the bottom ends of the plurality of side wall portions to provide an open area therebetween. Preferably, the predetermined distance is from about 6 inches to 24 inches, more preferably about 6 inches. According to the embodiment of the device, the distance from the top end to the bottom end of the plurality of side walls is from about 18 inches to 4 inches, preferably about 18 inches. In a preferred embodiment, the plurality of pores have an average diameter of between about 1 inch and about 4 inches. In the preferred embodiment, the apparatus includes a hose fulcrum member that is mounted within the hose and extends for at least the entire length thereof, the hose support member being slightly stiff to prevent the hose from sagging. 120217.doc -11- 200819043 According to another embodiment of the apparatus of the present invention, the hose comprises a plurality of hoses I5 and preferably the plurality of hose portions are substantially uniformly dispersed along the bottom portion of the outer casing. In a preferred embodiment, the distance from one of the plurality of hose portions to the adjacent one of the plurality of hose portions is , and the spoon 1 is 5 to 5, preferably about 2 English pairs. According to another embodiment of the apparatus according to the invention, the apparatus for use in a liquid medium comprises an outer casing adapted to float within the liquid medium such that a top portion thereof is retained above the top surface of the medium, the outer casing An open bottom portion, an open side portion, and a plurality of side wall portions having an end and a bottom end; a hose attached to the bottom portion of the outer casing substantially parallel to the surface of the medium and having a Forming a plurality of walls of pores that are substantially uniformly spaced throughout the length of the hose, at least one of the plurality of sidewall portions including - an open region for permitting flow of the liquid medium; A Wengji application; ^ Sun & body supply, attached to the base; and for the = pipeline supply gas components. In a preferred embodiment, the bottom knife of the outer casing is spaced apart from the bottom end of at least one of the plurality of side wall portions by a predetermined :: to provide an open area therein. In a preferred embodiment, the pre-twist distance is about 6 inches to 24 inches, and the strike is about 6 inches. According to one embodiment of the device, the distance between the shells of the plurality of side walls and the bottom end is about 18 holes (four) and the ancient A is about 18 inches. In a preferred embodiment, the brevity of the baptism has an average of about (the UKH and the time of the paste) [Embodiment] Referring now to the figures (the reference numerals similar to Yin refer to similar features) Fig. 120217.doc -12-200819043 1 shows a device according to an embodiment of the invention). The device also has a housing 12 that includes a frame cymbal 4. The frame 14 can be made of any material that is sufficiently stiff to the weight of the remaining components of the cutting device 10 and that will not corrode or otherwise degrade in the presence of water, including brine or water in which waste or other chemicals are dissolved. Preferably, the cut member is made of a marine-grade similar metal. The support members are preferably assembled by welding or other known methods including the use of screws, screws, rivets or the like. The frame 14 is structured to provide the desired shape to the outer casing 12. The structure of the frame 14 shown herein is in the shape of a rectangular crucible, but other acceptable shapes (such as cylinders) for the aerator are possible. Those skilled in the art will be aware of the use of such designs and other variations of the designs shown in the figures. In the design of the outer casing 12 shown in Figures 1 and 2, the side wall 16 is attached to the frame "on its right side 18, left side 20 and rear side 22. As used herein, the terms top, bottom, left, The right, front and rear are for convenience only when referring to the reference geometry used in the drawings, and are not intended to limit the scope of the invention. The side walls 16 on the right side 18, the left side 20 and the rear side 22 are preferably preferred. Made of a material having properties similar to those of the frame 14, and further preferably made of marine grade aluminum. The sidewalls can be made by conventional components including screws, screws, rivets, adhesives or welds. 16 is attached to frame 14. If any fastening means, such as a screw, is used to join the various parts of device 10, the fastening means should be made of commercial grade stainless steel. Front portion 28, top 26 of outer casing 12. And the bottom portion 30 is generally open. This allows the device to draw water from the bottom 30 of the outer casing 12 during operation and to drain water via at least a portion of its front portion 28. This operation is described in more detail below. 120217.doc -13- 200819043 However, it is possible to include one The body top 26, and an embodiment of the present invention utilizing a solid top is shown in Figure 7 and discussed below. Referring to Figure 1, the grid 32 is secured adjacent the bottom 3' of its outer casing 丨2. Grid 32 includes a conduit 34 and at least one venting hose 36 in fluid communication therewith. Preferably, hose 36 projects from a conduit 34 in a generally vertical direction. Further preferably, hose 36 Extending in a direction generally parallel to the surface of the liquid medium (in which the device 10 is used in the liquid medium), but other configurations are possible. The line 34 is preferably comprised of water (including saline or dissolved with other chemicals). An example of a material that is not corroded or otherwise degraded in the case of water. An example of a material suitable for the line 34 is Pvc, preferably marine grade PVC. Therefore, preferred, the line 34 is relatively rigid. (especially compared to a more flexible hose 36.) This provides a relatively rigid gas (two gas) supply line that will not be easily bent or kinked. The hose segment 36 has a gas permeable wall. The permeable wall includes a wall 38 extending therethrough and A plurality of micropores having an average diameter ranging from about 1 inch to about 4 inches. This hose 36 is preferably given to M/ic/ze// on September 22, 1998. The type disclosed in U.S. Patent No. 5,811,164, the disclosure of which is hereby incorporated by reference in its entirety herein in its entirety herein in its entirety in Made of thermoset polymer particles, which can be made according to the method described in the '64 patent. Preferably, the 'thermoset polymer particles have a grid of about 6 to 14 inches (and more preferably about 80 to The grid size of the grid is. In addition, preferably, the micropores in the wall 38 of the soft patron 36 have a uniformity of at least about 8% and more preferably at least about 〇0/〇. Additional changes similar to hoses are further described in the same application on May 8, 2006, 120, 217.doc -14 · 200819043, which states that it is Aeration Device For Use As A Diffuser and has agent number TEKNI 3.8-008 In the U.S. Provisional Patent Application, the disclosure of which is hereby incorporated by reference in its entirety herein in its entirety in its entirety in its entirety in its entirety in its entirety in the entire disclosure of a permeable portion. This portion may generally be in the form of a longitudinal strip extending along the length of the hose section. This strip may be formed from a non-porous polymer such as polyethylene which may be coextruded during formation of the hose 36. (d) applied to the hose 36. The additional materials that can be used to form the strips 37 are polyvinyl chloride, ABS, and polypropylene. Or 'a porous polymer that can be remelted by the hose itself (by application having an appropriate shape and size) Hot iron or the like applies streaks by remelting the polymer at a position where no streaks are required. In addition, a mortar or the like can be applied by application after the formation of the hose 36. The width of the gas permeable strip and the grain is preferably between 〇1〇英叶 and 1 inch '[(4) is about 0·125 inches to about 0 25 inches pair and the width is more preferably about 0.25 yang. According to the hose The lateral circumference, the air-impermeable stripe can be moved from the entire circumference (10) to 50%, but preferably from about 4% to the same. * In the device of the present invention, the formation of this type (four) the softness of the breathable stripe; The stripe can be oriented in the downward direction relative to the remaining hose (as shown in Figure 5). This may be advantageous because when the device is used to vent the entire circumference of the hose in the device, Under the tube; = = bubbles and bubbles from the upper part of the hose are two, these bubbles tend to coalesce. This coalescence causes the generation of coarse bubbles 'this is unfavorable. Therefore, in the hose part The inclusion of stripes ^ can be I20217.doc -15- 200819043 causes a large proportion of fine bubbles to be generated. In addition, the air-impermeable stripes 37 can be positioned in an offset manner, as illustrated in the figure. In this configuration, the stripes 37 is preferably positioned at a point offset between 5 and 45 degrees from the bottom of the hose in either direction. Thus, the hose can provide additional directional flow of the liquid medium. For example, as illustrated in the flap, the strips 37 are directed toward the rear portion 22 of the device. This causes a larger proportion of bubbles to be created in the front portion of the hose (with its rear portion) In contrast, this tends to direct the liquid to the front of the device and tends to attract more liquid from the rear of the device. It has been found that the hose of the type described in the '164 patent is capable of producing a large The bubble diffuser accomplishes a considerable amount of air to expand the air into the water without the need to use a larger power input for the blower. In other words, there is a relatively low amount of head loss in the '164 patent hose. . In addition, the diffusion hose of the '164 patent has a lower head loss than other known fine bubble diffusers. Further, it has been found that fine bubbles per volume of air are more easily absorbed into water than large or coarse bubbles. This increased absorption is due to the increased area of the smaller bubbles per unit volume of water. The increased surface area increases the absorption of air into the water because air is only absorbed into the water at the surface of the bubble. The relatively low head loss of the 164 patent diffusion hose combined with the high absorption level of air (or other gas) to water (or other liquid) results in a hose that is highly efficient, making it particularly suitable for use as a hose The hose 36 in the device 1G of the present invention. However, other types of diffusion devices can be used. Preferably, the grid 32 includes a conduit 120217.doc -16 - 200819043 μ (four) recording hose portion (four) coupled to the conduit 34 at both ends such that flow through the conduit 34 Gas can enter the hose 36 from either side. In the particular configuration shown in Figure i, the conduit 34 is configured as a rectangle that is secured adjacent the bottom 30 of the outer casing 12 such that it forms a flat (four) plane parallel to the bottom of the outer casing U. Preferably, the thumb 32 is about 8 inches wide (measured from the right side 18 to the left side 2 inches) and about 4 inches deep (measured from the front 28 to the back 22). However, the size of the grid 32 can vary depending on the volume of liquid to be vented. Additionally, it may be necessary to change the preferred dimensions to fit the grid 32 into the outer casing 12. In this configuration, the hose portion % extends laterally across the conduit 34 from the vicinity of the left side 18 of the outer casing 12 to the vicinity of the right side 20 of the outer casing ^. Additional configurations including the configuration of the hose portion 36 extending from the front portion of the outer casing 12 to the rear portion 22 are possible and will be appreciated by those skilled in the art. The grid 32 may also include a support member 35 for the hose portion to prevent excessive movement or sagging of the hose portion during use of the device. Preferably, the gusset member 35 extends over the top and bottom of each of the tube portions. Further, at least one support member 35 is used for every 24 inches of the length of the hose portion 36. Preferably, the standard 1/2 inch NPT pricking insert is used to attach the hose portion 36 to the manifold. 3 4 Externally, preferably the hose portion is along the length of the conduit 34 from about 1 inch to 5 The miles are preferably spaced apart from the center to the center by a regular interval of about 2 inches. Further, as shown in Fig. 6, the inner support member 39 can be placed inside each of the hose portion. The inner leg member 39 can be made of any material having sufficient rigidity to provide a support for the length of the hose portion 36. The support member 39 preferably has a member such that it extends into the fitting or its 120217.doc • 17 - 200819043 /etc. The length of the structure, the hose portion 36 is attached to the grid by the structures. 32. Thus, the inner support member 39 is preferably sized to fit within the selected attachment portion between the hose portion 36 and the grid 32. Materials suitable for the inner support member 39 include polyvinyl chloride, ABS, unrecorded steel, or any other material having sufficient strength and/or rigidity to support the hose portion 36. Moreover, although the inner support member 39 is shown as being circular in FIG. 6, additional shapes (including triangles, squares, or yokes may be shown in the φ diagram, in an alternative embodiment of the apparatus 10 of the present invention, The conduit 34' can be formed in a rectangular shape that extends beyond the front portion 28 of the outer casing 12. In the configuration, the portion of the frame 14 to which the grid 32 is secured can also extend beyond the remainder of the front portion 28 of the outer casing 12 to The grid 32 provides support. Returning now to the embodiment shown in Figures i and 2, the line 34 is connected to the gas source 〇,,, #乂, in the form of a pump or a blower. More preferably, the gas source 4 Further, preferably, the gas source 40 is of a type that does not require the use of oil, as this can cause oil to travel into the hose portion 36, which can cause damage to it. The pump or blower supplies pressurized ambient air to the grid 32, which is then diffused into the liquid medium through the hose 36. Preferably, the gas source 40 is at 1/10 and 1 inch standard cubic inch per minute. Between the (SCFM)/grid 32 used in the hose longitudinals The rate is supplied to the hose portion, the gas 36. More preferably, the gas source 4 supplies gas to the hose portion 36 at a rate between about 2·2 and 1〇8 at the hose length, and more preferably At a rate of about 0.4 to 0.55 SCFM per hose length, and preferably at a rate of 〇4 scfm / hose length. As shown in Figures 1 and 2, the gas source 4 is attached to the outer casing. The top portion 26 (such as by the support strut 41) and at its inlet portion "is connected to the conduit 34 using a 120217.doc • 18 - 200819043 flexible tubular member 44. The flexible tubular member is preferably referred to as a high pressure. The fitting of the hose of the fertilizer solution, but other types of flexible fittings may be suitable. In order to provide the dissipation of any excess heat added to the air by the operation of the gas source, it may be at the outlet of the gas source. A metal conduit section 45 (Fig. 4) is attached to the flexible tube member 44. Preferably, the metal conduit. Section 45 has a diameter of about 2 inches and is between 1 inch and 4 inches. More preferably, the metal pipe section 45 has a length of about 18 inches. The metal pipe _ section may be plated steel or any other similar gold. If a pump or blower is used as the gas source 40, it is necessary to have the pump or blower outside the liquid medium, but it is not necessary to attach the pump or blower to the top of the outer casing 12%. The pump or blower is located anywhere outside the water, where it can be connected to the inlet portion 42 of the grid 32 using a flexible tubular member 44. Furthermore, in order to reduce debris from the surrounding air from trapping in the pores of the hose portion 36 Alternatively, an air filter (not shown) can be used with the gas source 4 。. The float t 50 is attached to the peripheral 12, preferably attached to at least two sides near its top 26 (for example, on the left side 18 and the right side 2〇 shown in Figure i). The buoy 5 is designed and positioned on the outer casing 12 to maintain the device 1 in the liquid medium at a suitable level. Typically, the proper level of the device 1 is such that the grid 32 is between about 20 inches and 55 inches below the surface of the liquid * w (the device 10 is used in the liquid medium). The positioning of the grid 32 relative to the surface of the liquid medium will depend not only on the positioning of the buoy 50, but also on the size of the outer casing 12. By way of example, in the apparatus 10 shown in Figure 1, the vertical centerline of the grid 32 is spaced about 48 inches below the top 26, and the buoy "floats in the water 120217.doc -19-200819043 force The center is approximately 丨 下方 below the top 26 of the outer casing 12; however, the dimensions may vary. The dimensions of the device (including the depth of the frame and the positioning of the buoy relative to the frame 14) shall be such that the volume 32 is in the liquid. The surface of the media is between about 6 inches and 48 inches, preferably between about μ and 48 inches below the surface of the liquid medium and preferably at least about 36 inches below the surface of the liquid medium. In addition, the outer casing 12 of the device 10 should not rest on the bottom surface of the pond or at other locations where the device is used. The buoy 5G shown in Figure 1 is in the form of a gas-tight and impervious hollow cylinder; however, various other types of buoys (including buoys made of foam or the like) are possible. The buoy may also include apertures (10) formed therein that are sealed by a removable plug (four). The orifice 52 allows water or other liquid to be introduced into/to the crucible 50 to adjust the buoyancy center of the buoy which allows the overall position of the handling device 1 (in the liquid medium). For example, 'by adding water' buoy 50 The buoyancy center rises 'by thereby reducing the device 1' relative to the surface of the liquid medium. It is also understood that & achieving maximum performance 'optimally positioning the device 10 such that the grid 32 of the hose 36 is positioned at a distance from the device 10 is at the bottom of the top surface (such as the lake, pond or sump (the device 10 is at the bottom of its operation)) at a minimum distance of about 4 inches, preferably about 19 inches from the bottom surface. The location is preferably a small distance from the bottom surface and 24 degrees of force. The size and positioning of the buoy 5 变动 will vary depending on the size and weight of the composition and device of the liquid shell. If necessary, the buoy 50 can be attached to the rear portion 22 of the outer casing to provide additional buoyancy. Turning to Figure 7 'where the display + γ can not accommodate the device 1 of the present specification, another preferred implementation 120217.doc -20 - 200819043 Example. In this case, Like reference digital double apostrophe the corresponding symbol indicated in FIG. 1 of the same reference numerals used in this case, the apparatus 10 ". Comprising a frame having a 14 " 12 of the housing. " Again in this case, the frame 14" is in the shape of a rectangular crucible, but again, other acceptable shapes for the gas-passing device, such as cylinders, are also possible. In the design of the outer casing 12 shown in the ®7, the side wall 16" is attached to the right side 18", the left side 20" and the rear side 22" of the frame 14". However, in this case, the device H)" shown in the present invention does not include the buoy 50 used in the embodiment shown in the figure herein. Rather, 'each side wall' "and possibly top wall 16" includes a closed double wall construction (as can be seen in Figure 7a) that includes a pair of side walls 16a and 16b. Thus, a space 17" between the pair of side walls and the top wall - the space containing 空气 contains gas such as air to provide a float for the device (rather than the buoy 50). Again, the side walls - " &(10)" Made of a material having properties similar to those discussed above with respect to frame 14, such as preferably made of marine grades. Each of sidewalls 16a" and 16b" may thus be constructed by conventional components Attached to the stick wood 14 (including screws, screws, rivets, adhesives or welding). If any fastening means, such as a screw, is used to connect the various components of the apparatus 10, the fastening means should be made of commercial grade 'stainless steel. • As in the case of the embodiment of Figure 1, the outer casing 12, the front portion 28, and the bottom portion of the 0"

The version is open to the horse. However, in this case, the top 26, there is a double wall construction in which the month b includes a configuration similar to that of the side wall 16, discussed above. However, in an embodiment of the parent, the right side 18, the left side 20, and the rear side 22 are at least one and | and the season X is preferably all the side walls 16" including at least one open area 120217.doc -21- 200819043 9. The open area then permits some water to flow through one of the side walls = = or preferably all three. In the particular embodiment shown in Figure 7, at least one, but preferably all of the side walls 16" does not extend the entire length or depth of the side wall, but leaves an open area 19" between the bottom end 21" of each side wall 16, and the grid 32" of the hose 36". This open area between the grid 32" and the bottom of the side wall 16" (as indicated by the distance χ shown in Figure 7) or any other such open area at any other location in the side wall 较佳 is preferred. It is about 6 inches to 24 inches, of which about 6 inches is preferred. The presence of this open area allows more water to pass through the grid for ventilation purposes and further increases the directional flow of water. As discussed more fully below. In operation of apparatus 10 (as illustrated in Figure 4), a gas source, preferably in the form of a regenerative blower, forces gas, preferably ambient air, through tube 44 and Entering line 34. The gas then flows into the hose % and the pressure of the system increases until it reaches a level sufficient to force the gas through the micropores in the wall 38 of the hose 36. This results in a liquid adjacent to the hose 36. A large number of small bubbles 60 are formed in the medium. Because the gas is less dense than the liquid medium (this is the case where the air diffuses into the water), the bubbles rise out of the hose. As the air continues to force additional air into the system, additional The bubble is formed in the liquid medium and rises away from the hose 36. The surface tension of the liquid medium causes some liquid medium bubbles to rise, which in turn causes circulation of the liquid medium (as illustrated in Figure 4). In addition, due to some of the gas within the bubble It is absorbed into the liquid so that the vented liquid rises to the top of the liquid. As the additional liquid rises, the pressure of the water near the top of the device increases, thereby forcing at least some of the water to flow out of the open front 28 of the outer casing 12. 120217.doc -22- 200819043 The movement of the liquid vertically away from the hose portion 36 and out of the front portion 28 of the device 10 creates a vacuum effect in the liquid below the soft portion 36 which is used to draw liquid from below the device 1 Suction up and suck into the hose portion 36. The present invention circulates sufficient liquid (particularly water) through the device to draw liquid from at least 10 inches below the surface, depending on the nature of the liquid. More than enough for large-scale applications (especially for aquaculture and wastewater treatment) because the water depth in these applications is usually 5 inches and 7 inches. Between.

As the device continues to operate, the liquid that has risen away from the hose portion % and from the outer (four) front portion 28 continues to force the vented liquid out of the device. As the vacuum force generated by this cycle continues to absorb water away from the bottom of the medium, at least some of the vented water is drawn downward from the upper surface of the liquid medium. After a sufficient period of operation (depending on the volume of the medium and the output of the device), the entire liquid medium can be vented by the device. For example, a device 1 according to an embodiment of the invention is sufficient to vent a pond containing water and having an average depth of 6 inches and an average total area of i Ying to 3 inches, wherein the grid 32 comprises - a rectangular duct 34 having a soft f-part MM-pair to X-48-inch, each of the hose sections having - a diameter of about U00 inches, which is along the length of the rectangular tube, The spaces are spaced apart from the center to the center of the adjacent hose 36. Ventilation may be performed using a plurality of devices as described above or by using -four. Typically: this two: there will be a grid on the 'the grid from the front 28 to the rear 22 is about 48), but with a - large width, which can be as high as 16 inches 120217.doc -23 - 200819043 sigh. The housing 12 of the device will vary according to the size of the frame 32. The operation of the device 10" illustrated in Figure 7 is very similar to the operation discussed above with respect to the device illustrated in Figure 4. However, in Figure 7 The presence of the open area 19" in or below the side wall 16" of the device J 〇", under the brother, increases the circulation of water in the lower portion of the pen ίο", and thus more water passes through the grid 32, To achieve the purpose of ventilation. This in turn causes an increase in the directed flow of water (as shown in Figure 4), which further increases the ability of the device to vent the entire pond or other pools. In addition, the use of a solid top wall 26" It can itself cause a large directional flow of the venting water out of the device 1"" front portion 28". By utilizing the device of the present invention in the manner discussed above, it is possible = far superior to the potential achievable in the past Efficiency and ventilation or oxygenation potential = ventilating details 5, by controlling the specific parameters discussed above, it is possible to obtain the efficiency of such increases in the same place that is not seen in fresh water and salt water. through Potential. It can now be in fresh water at a level of between 0 hours/horsepower (for example, a blower) and preferably between about 4 and about (4) oxygen/hour/horsepower, and in brine for more than about (four) Oxygen / hour / horsepower and preferably at a level between about 6 and 15 broken oxygen / hour / horsepower t to obtain the standard ventilation efficiency ("SAEwire") as the amount of material parameters (four). These devices have (for example) and Standard devices, such as the surface aerators discussed above, have an efficiency that is at least twice their efficiency. Similarly, such devices are measured at standard milk transfer rates ("R" in fresh water. The aeration or oxygenation potential achieves a SOTR' of greater than 4 clots of oxygen per hour (preferably between about i (four) of oxygen per hour) and achieves greater than about (four) oxygen per hour in the brine and preferably between about 6 and 18 inches of oxygen. SOTR between /hour. 120217.doc •24- 200819043 ~ In order to achieve these efficiencies and oxygenation potential, again, most of the features discussed above can produce such results when used with the devices described above. Therefore, by using between 1/10 and 10 SCFM/hose longitudinal ruler (preferably between about 0.2 and 1. 〇SCFM/hose longitudinal ruler, and more preferably between about 〇4 and 〇·5) a blower that delivers gas to the hose portion at a rate between the SCFM/pipe longitudinals and preferably at a speed of about sc4 scfm/hose; by placing the device of the present invention such that the hose is placed The surface of the liquid medium is about 48 ounces below the surface of the liquid medium, preferably between the surface of the liquid medium (10) inches and 48 吋, and preferably at least about 吋 below the surface of the liquid medium; The hose of the inventive device is disposed at a minimum distance of about 4 inches from the bottom surface of the device being operated above, preferably at a minimum distance of about 18 inches from the bottom surface, and preferably at the bottom. The surface is at a distance of about 吋; the water flow through the device is increased by including an open area in the side wall of the device; and by using parallel and spaced from the center of each hose to the center by about 1 inch and 5 Hose arrays between miles (preferably about 2 inches from center to center) are possible And other highly improved the results. The above figures for S ΑΕ and SOTR data are calculated using a nonlinear regression technique that is recognized as its ASCE standard. The present invention has been described with reference to the specific embodiments thereof, but it should be understood that these embodiments only illustrate the principles and applications of the invention. It is understood that many modifications may be made to the illustrative embodiments, and other configurations may be devised without departing from the spirit and scope of the invention as defined by the appended claims. 120217.doc -25- 200819043 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front perspective view of a venting apparatus according to an embodiment of the present invention, and FIG. 2 is a rear view of a venting apparatus according to an embodiment of the present invention. Figure 3 is a front perspective view of a venting device in accordance with an alternative embodiment of the present invention;

Figure 4 is a cross-sectional view of a venting apparatus according to an embodiment of the present invention; Θ 5a and 5b are cross-sectional views of a hose portion having air impermeable stripes formed thereon; A cross-sectional view of a hose portion having an inner support member included therein; FIG. 7 is a front perspective view of another embodiment of a venting device of the present invention;

Fig. 7a is a side view and a part of a portion of Fig. 7. [Explanation of main component symbols] An enlarged view of the front view. 10 device 10,, device 12 housing 12, housing 14 frame 14, frame 16 side wall 16, side wall 1202l7.doc -26 - 200819043

16b, f side wall 16cn side wall 17, space 18 right side 18f, right side 19ff open area 20 left side 20H left side 21, bottom end 22 rear side 22? f rear side 26 top 26', top 28 front 28, 'front 30 Bottom 30, Bottom 32 Thumb 32f Grid 32,, Grid 34 Line 34f Line 35 Support 36 Hose I20217.doc -27- 200819043 36! Hose 36" Hose 37 Stripe 39 Internal Support 40 Gas source 41 support post 42 inlet portion 44 flexible pipe fitting

45 metal pipe section 50 buoy 52 orifice 54 plug 60 small bubbles

120217.doc -28-

Claims (1)

200819043 X. Patent Application Range: 1. A device for use in a liquid medium, comprising: a peripheral device adapted to float in the liquid medium such that its top and bottom are maintained at one of the tops of the medium Above the surface, the outer casing has an open bottom portion and an open side portion; a soft &amp;amp; is attached substantially parallel to the surface of the medium to the outer portion of the outer portion, and has a plurality of apertures formed therein Wall, The plurality of apertures have an average diameter between about 1 inch and about 4 inches and are substantially uniformly spaced throughout the length of the hose; a gas supply a conduit attached to the substrate; and means for supplying a gas to the conduit. 2. A device as claimed in claim 1, wherein the hose is formed from thermoset polymer particles dispersed in a matrix of a thermoplastic binder material. 3. The device of claim 1, wherein the wall of the hose has a substantially uniform porosity throughout a thickness of the wall. 4. The device of claim 3, wherein the porosity of the wall has a uniformity of at least 90%. 5. The device of claim 2, wherein the hose comprises a gas impermeable portion extending in a longitudinal direction along one of its lengths. 6. The device of claim 5, wherein the gas impermeable portion is in the form of a strip having a width between 〇.1〇 夬 and 1 inch. 7. The device of claim 2, further comprising a hose support member disposed within the hose and extending at least the entire length thereof, 120217.doc 200819043 the soft camp φ A Slightly stiff to prevent the hose from sagging. The device of claim 1, wherein the hose comprises a plurality of hose portions. 9. The apparatus of claim 2, wherein the plurality of hose portions are substantially uniformly dispersed along a bottom portion of the outer casing. 10. The device of claim 9, wherein a distance from one of the plurality of hose portions to one of the plurality of hose portions is about 2 inches. 11. The device of claim 8, wherein the gas supply line forms a rectangle having a first side and a second side, each of the plurality of hose portions being attached to the first end Attached to the first side of the rectangle and attached to the second side of the rectangle at one of the second ends thereof such that the gas is at the first end and the second end of the plurality of hose portions The hose was flowed from the 5 Hai pipeline. A device according to claim 1, wherein the outer casing has a depth such that the conduit is spaced apart by a distance of about 4 inches below the surface of the liquid&apos; 13. The device of claim 1, further comprising a pontoon member adapted to adapt the outer casing to float within the liquid medium. 14. A method for aeration of a liquid medium body having a bottom surface, the method comprising: providing a housing adapted to float within the liquid medium, at a distance from the surface of the liquid medium Mounting a hose to a predetermined position in the outer casing substantially parallel to the surface of the liquid medium at a predetermined first distance and at a predetermined second distance from the bottom surface, the hose having a formation a wall having a plurality of pores; supplying a gas to the hose at a predetermined gas supply rate to achieve a standard ventilation efficiency of greater than about 4 pounds of oxygen per hour per horsepower in fresh water at 120217.doc -2 - 200819043 The liquid medium is vented. The method of claim 14, wherein the liquid medium is vented at a standard oxygen transfer rate of greater than about 4 pounds of oxygen per hour in fresh water. The method of claim 14, wherein the predetermined gas supply rate is between about ι/ι 〇 and 10 SCFM/hose. 17. The method of claim 14, wherein the hose comprises a plurality of hose sections disposed in a parallel array. 18. The method of claim 17, wherein the plurality of hose sections are regularly spaced between a center of the parallel array of hose sections by a distance of between about 1 inch and 5 inches. 19. The method of claim 14, wherein the predetermined first distance is between about 6 inches and 48 inches. The method of claim 19, wherein the predetermined first distance is between about μ inches and 4 8 inches. 21. The method of claim 20, wherein the predetermined first distance is at least approximately English. 22. The method of claim 14, wherein the predetermined second distance is at least about 々. 23. The method of claim 22, wherein the predetermined second distance is at least about a mile. 24. The method of claim 23, wherein the predetermined second distance is at least about 英25. The method of item 14, wherein the standard ventilation efficiency is greater than 120217 in saline.doc 200819043 26. 28. 29. 30. 31. 32. 33. Approximately 6 broken oxygen/hour/horsepower. A device for use in a liquid medium comprising: - an outer casing ' adapted to float on the liquid medium (four), the outer casing having an open bottom portion, an open side portion, and a plurality of - top and bottom ends Each of the plurality of side wall portions includes a pair of side wall sections and an intervention space for generating buoyancy in the apparatus to provide the float; a hose 'which is substantially Attached to the bottom portion of the outer casing parallel to the surface of the medium, and having a wall formed with a plurality of apertures that are substantially uniformly spaced throughout the length of the hose; a gas supply line attached to the substrate; and a member for supplying a gas to the gas supply line. The device of claim 26, wherein the bottom portion of the outer casing is from the plurality of sides! The bottom end of the adjacent portion is spaced apart by a predetermined distance to provide an open area therebetween. The apparatus of claim 27, wherein the predetermined distance is from about 6 inches to about 1 inch, and the predetermined distance is about 6 inches. The apparatus of claim 26, wherein the distance from the top end of the plurality of side walls to the bottom end is about 18 inches to 4 inches. The device of claim 26, wherein the hose comprises a plurality of hose portions. (3) The device of claim 3, wherein the plurality of hose portions are substantially uniformly dispersed along the bottom portion of the outer casing. The device of claim 32, wherein the distance from one of the plurality of hose portions 120217.doc 200819043 to one of the plurality of hose portions is between 1 inch and 5 inches. The device of claim 33, wherein the distance from one of the plurality of hose portions to the plurality of hose portions is 2 inches from the neighbor. The device of claim 31, wherein the gas supply line forms a rectangle having a first side and a second side, each of the plurality of hose portions being at a first end thereof Attached to the first side of the rectangle and attached to the second side of the rectangle at one of the second ends thereof such that the gas is at the first end of the plurality of hose portions and the first The second end flows into the hose from the gas supply line. 36. A device for use in a liquid medium, comprising: a peripheral device adapted to float within the liquid medium such that a top portion thereof is retained above a top surface of the medium, the outer casing having An open bottom portion, an open side portion, and a plurality of side wall portions having a top end and a bottom end; a hose attached to the bottom portion of the outer casing substantially parallel to the surface of the medium, and Having a wall formed with a plurality of apertures, the equal apertures being substantially evenly spaced throughout the length of the hose, at least one of the plurality of sidewall portions including a means for permitting the flow of the liquid medium An open area; a gas supply line attached to the substrate; and means for supplying a gas to the gas supply line. 37. The apparatus of claim 36, wherein the bottom portion of the outer casing is spaced apart from the bottom end of the at least one of the plurality of 120217.doc 200819043 sidewall portions by a predetermined distance to provide the open region therein . 38. The device of claim 37, wherein the predetermined distance is from about 6 inches to 24 inches to 0. 39. </ RTI> as claimed in the device, wherein the predetermined distance is about 6 inches. The device of claim 37, wherein the distance from the top ends of the plurality of side walls to the bottom ends is between about 18 inches and 4 inches. 41. The apparatus of claim 40, wherein the distance from the top ends of the plurality of side walls to the bottom ends is about 18 inches. 42. The device of claim 36, wherein the hose comprises a plurality of hose portions. 43. The device of claim 42, wherein the plurality of hose portions are substantially uniformly dispersed along the bottom portion of the outer casing. 44. The device of claim 43, wherein the distance from one of the plurality of base portions to a neighbor of the plurality of base portions is between about 1 inch and 5 inches. 45. The device of claim 43, wherein the distance from one of the plurality of hose portions to a neighbor of the plurality of hose portions is about 2 inches. The device of claim 42, wherein the gas supply line forms a rectangle having a 'one side and a second side, each of the plurality of hose portions at one of the first ends Attached to the first side of the rectangle and attached to the second side of the rectangle at one of the second ends thereof such that the gas is at the first end of the plurality of hose portions and the first The second end flows into the hose from the gas supply line. 120217.doc